在远程git存储库中查找与给定标签相同提交的所有标签

Question

I am trying to find all tags that are at the same commit as a given tag in a remote git repository. If at all possible, I do not want to clone a local copy of the remote.

For example, I have a repository where the two tags release/latest and release/1.00 both point to the same commit. So, given the tag release/latest I want my script to return release/1.00 .

I am using ls-remote to list the remote tags:

git ls-remote --tags gitolite@myserver.example.org:/base.git

This command returns

ad759      refs/tags/release/1.00
0e9d0      refs/tags/release/1.00^{}
de388      refs/tags/release/latest
0e9d0      refs/tags/release/latest^{}

(I shortened the commit hashes to save space.)

I do not know how to interpret this: Why are there two lines for each tag? Which reference points to the "real" tags? Should I ignore the tags not followed by ^{} ?

Answer 1

The tags ending with ^{} are the actual ( lightweight ) tags to git commits; whereas the ones without this suffix are (PGP-)signed or otherwise annotated ones.

On a remote repository, you'll have to parse the output of ls-remote , like this:

tags=$(git ls-remote --tags gitolite@myserver.example.org:/base.git)
REV=$(echo "$tags" | sed -n 's#\s*refs/tags/release/latest$##p')
echo "$tags" | sed -n "s#$REV\s*refs/tags/##p"

On a local (1.7.0) repository, you could simply use

git tag --points-at release/latest

On pre-1.7.0, substitute ls-remote with git show-ref --tags -d in the remote solution.